Remote detection of a rotator based on rotational Doppler effect

Yanwang Zhai; Shiyao Fu; Jianqiang Zhang; Yanlai Lv; Heng Zhou; Chunqing Gao

doi:10.35848/1882-0786/ab6e0c

Remote detection of a rotator based on rotational Doppler effect

Yanwang Zhai, Shiyao Fu, Jianqiang Zhang, Yanlai Lv, Heng Zhou, Chunqing Gao^*

^*Corresponding author for this work

School of Optics and Photonics

Research output: Contribution to journal › Article › peer-review

40 Citations (Scopus)

Abstract

Based on the rotational Doppler effect arising from optical orbital angular momentum, we proposed the detection system of a rotator over a distance, by probing the object with a Laguerre-Gauss beam and a Kepler telescope. The angular velocities in tens of meters detection distances can be detected by analyzing the returned beating signals. Different probe beams with various topological charges from l = 25 to l = 45 are employed. The biggest measurement error is 1.15 Hz. This scheme proves the feasibility of a practical sensor to detect a rotator remotely.

Original language	English
Article number	022012
Journal	Applied Physics Express
Volume	13
Issue number	2
DOIs	https://doi.org/10.35848/1882-0786/ab6e0c
Publication status	Published - 1 Feb 2020

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Zhai, Y., Fu, S., Zhang, J., Lv, Y., Zhou, H., & Gao, C. (2020). Remote detection of a rotator based on rotational Doppler effect. Applied Physics Express, 13(2), Article 022012. https://doi.org/10.35848/1882-0786/ab6e0c

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AB - Based on the rotational Doppler effect arising from optical orbital angular momentum, we proposed the detection system of a rotator over a distance, by probing the object with a Laguerre-Gauss beam and a Kepler telescope. The angular velocities in tens of meters detection distances can be detected by analyzing the returned beating signals. Different probe beams with various topological charges from l = 25 to l = 45 are employed. The biggest measurement error is 1.15 Hz. This scheme proves the feasibility of a practical sensor to detect a rotator remotely.

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Remote detection of a rotator based on rotational Doppler effect

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